press tab after entering value in each input box
1)in tree the attribute decides the length of the first branch(the stem).
2)in triangle,rectangle and circle the attribute decides the depth of the pattern-repetition.
3) In "tree" fractal type we wanted to implement change in angle between the branches but were'nt able to do so in time. To change the angle between the branches go to line 54,56 in source code and replace '15' with any value of your choice"